code: def combine(self, F, branch1, branch2, combine):
      if combine == "add":
          data = branch1 + branch2
          data = F.Activation(data, act_type="relu")
      elif combine == "concat":
          data = F.concat(branch1, branch2, dim=1)
          data = F.Activation(data, act_type="relu")
      return data
  
imports: from mxnet.context import cpu
  from mxnet.gluon import nn
  from mxnet.gluon.nn import BatchNorm
  from mxnet.gluon.block import HybridBlock
label_desc: Use image node_id 2 for calling the shuffleUnit obj's underlying member method code with example usage: obj.combine(F, branch1, branch2, combine) and returns: data